全功能型铷钟X72

• Vibration (operating):
GR-CORE-63, 5.4.2/4, locked to 1.0 g
• Storage and transport
Temperature: Shock/vibration:
-55°C to +100°C GR-CORE-63 5.4.3 to 1.5 g
<3E-11 <1E-11 <3E-12
• Accuracy at shipment:
<±5E-11 (25°C), typical
• Retrace:
<±2E-11 (on-off-on: 24 h, 48 h, 12 h @ 25°C)
• Control range
With digital input: With analog input:
Base Plate
3.00 (76)
Aging Daily1
Monthly2
Yearly
Temperature Coefficient
Performance
AP1 ±1.2E-11 AP2 ±1.2E-11 AP3 ±4E-11
±5E-11 ±5E-11 ±3E-10
±5E-10 ±5E-10 ±1E-9
PHYSICAL SPECIFICATIONS • Weight: • Size:
• Volume: • Warranty
Electronics:
8.75 oz (250 g) 3.5” L x 3.0” W x 0.70” H (89mm x 76mm x 17.7mm) 7.6 in.3 (124 ml)
Output 1 Derived Sine
Output 2 Master XO*
Output 3 ** Derived Square Wave *
5,10,15 MHz 60 MHz
13 MHz
52 MHz
10.24 MHz
61.44 MHz
10.29 MHz
61.76 MHz
9.8304 MHz 58.982 MHz
magnitude (df/f) <3E-11 pp
• Test/status
Built-in self-test (BIST) ACMOS: Service /fault-unlock Serial: SSIP
• Application profiles:
ENVIRONMENTAL SPECIFICATIONS
* digital
** any Master XO frequency/2
5,10,15 MHz 13 MHz 2.048 MHz 1.544 MHz .9152, 14.7456 MHz
Output 4 1 PPS
yes yes yes yes yes
NOTE: The X72 provides 4 outputs. Typical factory settings are shown above. Other standard telecom frequencies are available. All outputs are programmable to enabled or disabled.
<1E-10 over -40 to 85°C <3E-10 over 0 to 50°C <3E-9 over -10 to 70°C
Symmetricom’s rubidium atomic oscillator, the X72®, reflects significant advances in physics miniaturization and integration. X72’s compact form factor, low power consumption, and full-spectrum temperature operation make rubidium performance accessible to a wide range of synchronization applications, from telecom networks to handheld test and measurement devices.
The X72 can communicate through its serial port to provide dynamic frequency control and selection and to enable or disable outputs. X72 can be queried for such information as serial number, operating hours, operating temperature, event history, self-test and other such performance indicators.
±1E-6 with granularity of 1E-12
±1.5E-9, 0-5 V into 5 k Ω or ±6.5 E-09, 0-5 V into 5 k Ω
• Warm-up time
Time to lock: Time to <1E-9:
5 minutes (accuracy at lock <5E-8) 7.5 minutes
• Operating temperature:
-40°C to +85°C baseplate for all AP levels
• Magnetic field sensitivity:
dc (≤2 Gauss) <±4E-11/Gauss
• Humidity:
GR-CORE-63, <5 to 95%, RH non-condensing
19 1 PPS IN
20 1 PPS OUT
21 LOCK (if low, Rb osc. locked) 22 FXO (VCXO freq. output)
23 FACMOS RTN
24 FACMOS OUT
25 FSINE RTN
26 FSINE OUT
Bottom View
The X72 connector diagram
Performance (-40°C to +85°C) • Multiple Output Frequencies and
Characteristics • Command, Control & Monitoring
Through Serial Interface Protocol
APPLICATIONS • GSM and UMTS Level Stability
01 VDD (power input)
02 VDD
03 VDD
04 VDD
05 VDD
06 VDD
07 VDD
08 SERVICE
09 DOUT
10 DIN
11 FREQ CTRL
12 VSS
13 VSS (power & signal RTN)
14 VSS
15 VSS
16 VSS
17 VSS
18 VSS
1 year
Notes: Consult factory for application support,test reports or special requirements. SSIP is the Symmetricom’s Serial Interface Protocol. Values are typical, at 25°C baseplate and nominal voltage.
The X72 rubidium atomic oscillator
X72 Specifications
• Reliability: Benign, ground: MTBF: 527,000 hrs @ 40°C
ELECTRICAL SPECIFICATIONS • Frequency outputs:
Technical specifications subject to change without notice. Contact Symmetricom for latest information.
2.07 (52.5)
0.70 (18)
0.42 (10.7)
Baseplate mounting holes (4) 4X M3X0.5 X .20 (5.1)
3.50 (89) 3.250 (82.6)
Front View
2.75 (69.9)
Key to front panel Connector:
MOLEX Connector P/N 52629-2651
02
26
01
25
Mate with MOLEX P/N 52660-2651
Connector Pin Outs
TELECOM SOLUTIONS
X72
Precision Rubidium Oscillator
ቤተ መጻሕፍቲ ባይዱ
KEY FEATURES • Disciplines to a 1 PPS Input • Compact Form Factor for a Wide
Range of Applications • Low Power Operation (+10V to +32V) • Wide Temperature Spectrum
Without Need for Re-calibration • Ideal Performance Levels for
CDMA Networks • Stratum 2, or Type II Level
Performance for Synchronization for Central Offices / Network Nodes
• Sine output (for 10 MHz output)
Power: Phase noise:
4.5 dBm min. into 50Ω
1 Hz 10 Hz 100 Hz 1 kHz 10 kHz
<−72 dBc/Hz <−90 dBc/Hz <−128 dBc/Hz <−140 dBc/Hz <−148 dBc/Hz
• Spurious
Harmonic: Non-harmonic:
<−60 dBc <−53 dBc
• Digital outputs: 5V ACMOS
Jitter:
<10 ps RMS
• Stability: (Allan deviation)
t=1 second t=10 second t=100 second
The X72 provides highly precise outputs using the inherent stability of the rubidium atom, in a compact form factor. This delivers an excellent value to the market for a wide range of applications.
• Supply voltages:
10 to 32 V
Warm-up: Operating:
18 W max (+85°C to -40°C) 15 W @-40°C,10 W @ 25°C, 5 W @ 85°C baseplate
• Voltage coefficient
10.00V -32.00V:
The X72 technology, supported by patents, marks a new standard for precision atomic references. A complete range of output frequencies and characteristics are available to meet the needs of a large set of synchronization applications. The X72 can be disciplined to a precision 1 PPS reference input (such as GPS) or it can operate by itself as a precision stand-alone reference. X72’s outputs also include a 1 PPS.